Avoid overflow possibility.
Signed-off-by: Louis Langholtz <lou_langho...@me.com>
---
diff --git a/kernel/range.c b/kernel/range.c
index 322ea8e..06d9ee7 100644
--- a/kernel/range.c
+++ b/kernel/range.c
@@ -113,12 +113,16 @@ static int cmp_range(const void *x1, const void *x2)
{
const struct range *r1 = x1;
const struct range *r2 = x2;
- s64 start1, start2;
+ u64 start1, start2;
start1 = r1->start;
start2 = r2->start;
- return start1 - start2;
+ if (start1 < start2)
+ return -1;
+ if (start1 > start2)
+ return 1;
+ return 0;
}
int clean_sort_range(struct range *range, int az)
--
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